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DOE OSTI · 3683853

Generation of 3.3-mJ, 2.45-µm, sub-2-cycle laser pulses via hollow-core fiber pulse compression

Britton, Mathew [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)]·Song, Huanyu [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)] (ORCID:0000000226200997)·Kincaid, Chelsea [The Ohio State University, Columbus, OH (United States)] (ORCID:0009000869927361)·Brahms, Christian [Heriot-Watt University, Edinburgh (United Kingdom)] (ORCID:0000000280093547)·Cunningham, Eric [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)] (ORCID:0000000209764416)·Daniels, Andrew [University of Central Florida, Orlando, FL (United States)]·Fang, Li [University of Central Florida, Orlando, FL (United States)]·Gebhardt, Martin [Heriot-Watt University, Edinburgh (United Kingdom)]·Kaufman, Brian [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)] (ORCID:000000028172702X)·Lantigua, Christopher [University of Central Florida, Orlando, FL (United States)]·Larsen, Kirk A. [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)] (ORCID:000000023252260X)·Le, Quynh [University of Central Florida, Orlando, FL (United States)]·Lojo, Judith [University of Central Florida, Orlando, FL (United States)]·Neuhaus, Marcel [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)]·Robinson, Joseph S. [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)]·Teodoro, Blanca [University of California, Davis, CA (United States)]·Travers, John C. [Heriot-Watt University, Edinburgh (United Kingdom)] (ORCID:0000000303509104)·Tsao, Jonathan [University of California, Davis, CA (United States)]·Chang, Zenghu [University of Ottawa, ON (Canada)]·Chini, Michael [The Ohio State University, Columbus, OH (United States)] (ORCID:000000029058928X)·Wu, Yi [University of Central Florida, Orlando, FL (United States)] (ORCID:0000000185203875)·Forbes, Ruaridh [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); University of California, Davis, CA (United States)] (ORCID:0000000320975991)
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Abstract

We demonstrate nonlinear compression of mid-infrared pulses from a Cr:ZnSe chirped-pulse amplifier using a gas-filled stretched hollow-core fiber followed by bulk-material compression. Starting from 90 fs, 2.45 µm pulses with 5.3 mJ energy, spectral broadening in the gas-filled capillary combined with optimized dispersion management enables compression to 15 fs, less than two optical cycles at 2.45 µm, with 3.3 mJ pulse energy, corresponding to a peak power of approximately 0.12 TW. The simplicity of the approach, based on a single hollow-core fiber stage and bulk dispersion compensation, makes it scalable to higher energies and establishes a robust route to mid-infrared drivers for high harmonic generation and attosecond applications.

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Britton, Mathew [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)], Song, Huanyu [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)] (ORCID:0000000226200997), Kincaid, Chelsea [The Ohio State University, Columbus, OH (United States)] (ORCID:0009000869927361), Brahms, Christian [Heriot-Watt University, Edinburgh (United Kingdom)] (ORCID:0000000280093547), Cunningham, Eric [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)] (ORCID:0000000209764416), Daniels, Andrew [University of Central Florida, Orlando, FL (United States)], Fang, Li [University of Central Florida, Orlando, FL (United States)], Gebhardt, Martin [Heriot-Watt University, Edinburgh (United Kingdom)], Kaufman, Brian [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)] (ORCID:000000028172702X), Lantigua, Christopher [University of Central Florida, Orlando, FL (United States)], Larsen, Kirk A. [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)] (ORCID:000000023252260X), Le, Quynh [University of Central Florida, Orlando, FL (United States)], Lojo, Judith [University of Central Florida, Orlando, FL (United States)], Neuhaus, Marcel [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)], Robinson, Joseph S. [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)], Teodoro, Blanca [University of California, Davis, CA (United States)], Travers, John C. [Heriot-Watt University, Edinburgh (United Kingdom)] (ORCID:0000000303509104), Tsao, Jonathan [University of California, Davis, CA (United States)], Chang, Zenghu [University of Ottawa, ON (Canada)], Chini, Michael [The Ohio State University, Columbus, OH (United States)] (ORCID:000000029058928X), Wu, Yi [University of Central Florida, Orlando, FL (United States)] (ORCID:0000000185203875), Forbes, Ruaridh [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); University of California, Davis, CA (United States)] (ORCID:0000000320975991). 2026-06-12. Generation of 3.3-mJ, 2.45-µm, sub-2-cycle laser pulses via hollow-core fiber pulse compression. https://doi.org/10.1364/ol.596520

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